Submerged Arc Welding:

The most universally successful solution to automatic flux-shielded welding is the submerged arc welding procedure. This process was produced independently in the USA and USSR in the middle and late year 1930s. Submerged Arc Welding (SAW) generated coalescence of metals by heating them with an arc among a bare metal electrode and the work. The arc and molten metal are 'submerged' in a blanket of granular fusible flux on the work. Pressure is not utilized, and filler metal is achieved from the electrode and sometimes from a supplemental source such like welding rod or metal granules.

In submerged arc welding, the arc is covered by a flux. This flux plays a vital role in that

• The stability of the arc is based on the flux.
• Mechanical and chemical properties of the final weld deposit might be controlled by flux.
• The quality of the weld might be affected by the care and handling of the flux. Submerged arc welding is a versatile production welding procedure capable of making

welds with currents up to 2000 A, ac or dc, by using single or multiple wires or strips of filler metal. Ac and dc both power sources may be utilized on the same weld at the same time.